ForceLogoffClientUser causes a NullPointerException in PageBuilder.java:893

Hello,
this code cause a NullPointerException.
The url I get with
final String url =WDURLGenerator.getApplicationURL( wdComponentAPI.getApplication().getDeployableObjectPart(),
Collections.singletonMap("sap-locale", dataObject));
WDClientUser.forceLogoffClientUser(url);
the dataObject contains the language String e.g. "en" , "de" etc.
I will use this to switch the language of the Web Dynpro, if the user switches the potal language.
The following Exceptions is caused
java.lang.NullPointerException
at com.sap.portal.pb.PageBuilder.updatePortalHooks(PageBuilder.java:893)
at com.sap.portal.pb.PageBuilder.SendDataAndProcessAction(PageBuilder.java:325)
at com.sap.portal.pb.PageBuilder$1.doPhase(PageBuilder.java:830)
at com.sap.tc.webdynpro.clientserver.window.WindowPhaseModel.processPhaseListener(WindowPhaseModel.java:755)
at com.sap.tc.webdynpro.clientserver.window.WindowPhaseModel.doPortalDispatch(WindowPhaseModel.java:717)
at com.sap.tc.webdynpro.clientserver.window.WindowPhaseModel.processRequest(WindowPhaseModel.java:136)
at com.sap.tc.webdynpro.clientserver.window.WebDynproWindow.processRequest(WebDynproWindow.java:335)
at com.sap.tc.webdynpro.clientserver.cal.AbstractClient.executeTasks(AbstractClient.java:143)
at com.sap.tc.webdynpro.clientserver.session.ApplicationSession.doProcessing(ApplicationSession.java:299)
at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessingStandalone(ClientSession.java:759)
at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessing(ClientSession.java:712)
at com.sap.tc.webdynpro.clientserver.session.ClientSession.doProcessing(ClientSession.java:261)
at com.sap.tc.webdynpro.clientserver.session.RequestManager.doProcessing(RequestManager.java:149)
at com.sap.tc.webdynpro.serverimpl.defaultimpl.DispatcherServlet.doContent(DispatcherServlet.java:62)
at com.sap.tc.webdynpro.serverimpl.defaultimpl.DispatcherServlet.doPost(DispatcherServlet.java:53)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.runServlet(HttpHandlerImpl.java:401)
at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.handleRequest(HttpHandlerImpl.java:266)
at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:387)
at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:365)
at com.sap.engine.services.httpserver.server.RequestAnalizer.invokeWebContainer(RequestAnalizer.java:944)
at com.sap.engine.services.httpserver.server.RequestAnalizer.handle(RequestAnalizer.java:266)
at com.sap.engine.services.httpserver.server.Client.handle(Client.java:95)
at com.sap.engine.services.httpserver.server.Processor.request(Processor.java:160)
at com.sap.engine.core.service630.context.cluster.session.ApplicationSessionMessageListener.process(ApplicationSessionMessageListener.java:33)
at com.sap.engine.core.cluster.impl6.session.MessageRunner.run(MessageRunner.java:41)
at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37)
at java.security.AccessController.doPrivileged(Native Method)
at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:100)
at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:170)
kind regards
Gunter

Hello,
I have the same problem now when I try to force portal logoff from WD.
Could you tell me if you solved this problem or how can I fix that, please?
CODE ********************************
     String hostName = WDProtocolAdapter.getProtocolAdapter().getRequestObject().getServerName();
               int port = WDProtocolAdapter.getProtocolAdapter().getRequestObject().getServerPort();
               StringBuffer url = new StringBuffer("http://");
               url.append( hostName );
               url.append(":");
               url.append(port);
     WDClientUser.forceLogoffClientUser(url.toString());
ERROR ***************************
java.lang.NullPointerException
    at com.sap.portal.pb.PageBuilder.updatePortalHooks(PageBuilder.java:931)
    at com.sap.portal.pb.PageBuilder.SendDataAndProcessAction(PageBuilder.java:327)
    at com.sap.portal.pb.PageBuilder$1.doPhase(PageBuilder.java:868)
    at com.sap.tc.webdynpro.clientserver.window.WindowPhaseModel.processPhaseListener(WindowPhaseModel.java:755)
    at com.sap.tc.webdynpro.clientserver.window.WindowPhaseModel.doPortalDispatch(WindowPhaseModel.java:717)
Regards,
Sonia

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putStream.java:107)
at
weblogic.common.internal.ChunkedObjectInputStream.readObject(ChunkedObjectIn
putStream.java:115)
at
weblogic.rjvm.ConnectionManager.readPeerInfo(ConnectionManager.java:686)
at
weblogic.rjvm.ConnectionManagerClient.handleIdentifyResponse(ConnectionManag
erClient.java:140)
at
weblogic.rjvm.ConnectionManager.dispatch(ConnectionManager.java:627)
at weblogic.rjvm.t3.T3JVMConnection.dispatch(T3JVMConnection.java,
Compiled Code)
at
weblogic.socket.JavaSocketMuxer.processSockets2(JavaSocketMuxer.java,
Compiled Code)
at
weblogic.socket.JavaSocketMuxer.processSockets(JavaSocketMuxer.java,
Compiled Code)
at
weblogic.socket.SocketReaderRequest.execute(SocketReaderRequest.java:24)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:139)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java, Compiled
Code)
--------------- nested within: ------------------
weblogic.utils.AssertionError: ***** ASSERTION FAILED ***** - with nested
exception:
[java.io.StreamCorruptedException: Type code out of range, is 0]
at
weblogic.rjvm.ConnectionManager.readPeerInfo(ConnectionManager.java:688)
at
weblogic.rjvm.ConnectionManagerClient.handleIdentifyResponse(ConnectionManag
erClient.java:140)
at
weblogic.rjvm.ConnectionManager.dispatch(ConnectionManager.java:627)
at weblogic.rjvm.t3.T3JVMConnection.dispatch(T3JVMConnection.java,
Compiled Code)
at
weblogic.socket.JavaSocketMuxer.processSockets2(JavaSocketMuxer.java,
Compiled Code)
at
weblogic.socket.JavaSocketMuxer.processSockets(JavaSocketMuxer.java,
Compiled Code)
at
weblogic.socket.SocketReaderRequest.execute(SocketReaderRequest.java:24)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:139)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java, Compiled
Code)
JNDI naming exception: Naming exception trying to connect to:
t3://localhost:7501 as: system: beaadmin

yes, that was the reason.
thank you very much!
"Dimitri Rakitine" <[email protected]> schrieb im Newsbeitrag
news:[email protected]...
That sounds like you use 1.2 on the client side - make sure that you use1.3.
>
In weblogic.developer.interest.ejb Nora Serinek <[email protected]>
wrote:
Help needed!
I'm using WLS6.1 with SP1.
Calling weblogic.deploy on command line causes the following exceptionsno
matter if i'm using list or deploy option:
java weblogic.deploy -port 7501 list 12345678
java.io.StreamCorruptedException: Type code out of range, is 0
at
java.io.ObjectInputStream.peekCode(ObjectInputStream.java:1280)
at
java.io.ObjectInputStream.SkipToEndOfBlockData(ObjectInputStream.java:1211)
at
java.io.ObjectInputStream.inputClassDescriptor(ObjectInputStream.java:776)
atjava.io.ObjectInputStream.readObject(ObjectInputStream.java:353)
atjava.io.ObjectInputStream.readObject(ObjectInputStream.java:232)
atjava.io.ObjectInputStream.inputObject(ObjectInputStream.java:978)
atjava.io.ObjectInputStream.readObject(ObjectInputStream.java:369)
atjava.io.ObjectInputStream.readObject(ObjectInputStream.java:232)
at
weblogic.common.internal.ChunkedObjectInputStream.readObject(ChunkedObjectIn
putStream.java:107)
at
weblogic.common.internal.ChunkedObjectInputStream.readObject(ChunkedObjectIn
putStream.java:115)
at
weblogic.rjvm.ConnectionManager.readPeerInfo(ConnectionManager.java:686)
at
weblogic.rjvm.ConnectionManagerClient.handleIdentifyResponse(ConnectionManag
erClient.java:140)
at
weblogic.rjvm.ConnectionManager.dispatch(ConnectionManager.java:627)
atweblogic.rjvm.t3.T3JVMConnection.dispatch(T3JVMConnection.java,
Compiled Code)
at
weblogic.socket.JavaSocketMuxer.processSockets2(JavaSocketMuxer.java,
Compiled Code)
at
weblogic.socket.JavaSocketMuxer.processSockets(JavaSocketMuxer.java,
Compiled Code)
at
weblogic.socket.SocketReaderRequest.execute(SocketReaderRequest.java:24)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:139)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java,Compiled
Code)
--------------- nested within: ------------------
weblogic.utils.AssertionError: ***** ASSERTION FAILED ***** - withnested
exception:
[java.io.StreamCorruptedException: Type code out of range, is 0]
at
weblogic.rjvm.ConnectionManager.readPeerInfo(ConnectionManager.java:688)
at
weblogic.rjvm.ConnectionManagerClient.handleIdentifyResponse(ConnectionManag
erClient.java:140)
at
weblogic.rjvm.ConnectionManager.dispatch(ConnectionManager.java:627)
atweblogic.rjvm.t3.T3JVMConnection.dispatch(T3JVMConnection.java,
Compiled Code)
at
weblogic.socket.JavaSocketMuxer.processSockets2(JavaSocketMuxer.java,
Compiled Code)
at
weblogic.socket.JavaSocketMuxer.processSockets(JavaSocketMuxer.java,
Compiled Code)
at
weblogic.socket.SocketReaderRequest.execute(SocketReaderRequest.java:24)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:139)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java,Compiled
Code)
JNDI naming exception: Naming exception trying to connect to:
t3://localhost:7501 as: system: beaadmin--
Dimitri

Help! JDOM SAXParserFactory causing Security exception in Microsoft Java VM

Hiya all, I'm really hoping you can offer me a hand with this problem.
I'm having a problem with SAXParserFactory causing a security exception in
Microsoft Internet Explorer, using JDOM b7.
here is the error string it spits out:
String...com.ms.security.SecurityExceptionEx[javax/xml/parsers/SAXParserFact
ory.newInstance]: Unable to access system property:
javax.xml.parsers.SAXParserFactory
at com/ms/security/permissions/PropertyPermission.check
(PropertyPermission.java)
at com/ms/security/PolicyEngine.shallowCheck (PolicyEngine.java)
at com/ms/security/PolicyEngine.checkCallersPermission (PolicyEngine.java)
at com/ms/security/StandardSecurityManager.chk
(StandardSecurityManager.java)
at com/ms/security/StandardSecurityManager.checkPropertyAccess
(StandardSecurityManager.java)
at java/lang/System.getProperty (System.java)
at javax/xml/parsers/SAXParserFactory.newInstance
(SAXParserFactory.java:139)
at java/lang/reflect/Method.invoke (Method.java)
at org/jdom/input/SAXBuilder.createParser (SAXBuilder.java)
at org/jdom/input/SAXBuilder.build (SAXBuilder.java)
at org/jdom/input/SAXBuilder.build (SAXBuilder.java)
at aim/AIMPanel.parseXML (AIMPanel.java:673)
at aim/AIMPanel.serverCall (AIMPanel.java:486)
at aim/LogicalAIM.<init> (LogicalAIM.java:62)
at aim/AIMPanel.customInitialize (AIMPanel.java:1595)
at shout3d/Shout3DPanel.n (Shout3DPanel.java)
at shout3d/Shout3DPanel.run (Shout3DPanel.java)
at java/lang/Thread.run (Thread.java)
Using Microsoft's 5.0.0.3802 VM, this error results in a NullPointer
Exception further down, causing the app to quit.
in 5.0.0.3310, it reports the error but continues to run.
in 5.0.0.3234, no errors are reported at all.
Do you guys have any idea what's going on and why, and what I might be able
to do to correct this?
Any help is greatly appreciated...
-J

The factory classes (DocumentBuilderFactory and SAXParserFactory) use a Systems Property to determine which parser to use. Since applets do not have access to the Systems properties, a security exception is usually thrown.
I have not done work with Applets that use JAXP, however I would bet if you search this forum you will find other who have had this problem along with a possible work around.
Hope this helps.

NullPointerException on a java control

Hi,
Just wondering if anyone has encountered the following issue documented here: http://support.bea.com/application_content/product_portlets/support_patterns/wlw/NullPointerExceptionOnControlInstancePattern.html
( I'm using Workshop 8.1.5)
java.lang.NullPointerException
at test.testController.begin(testController.jpf:52)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at com.bea.wlw.netui.pageflow.FlowController.invokeActionMethod(FlowController.java:1507)
at com.bea.wlw.netui.pageflow.FlowController.getActionMethodForward(FlowController.java:1433)
at com.bea.wlw.netui.pageflow.FlowController.internalExecute(FlowController.java:764)
at com.bea.wlw.netui.pageflow.PageFlowController.internalExecute(PageFlowController.java:211)
at com.bea.wlw.netui.pageflow.FlowController.execute(FlowController.java:594)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
at com.bea.wlw.netui.pageflow.PageFlowRequestProcessor.process(PageFlowRequestProcessor.java:650)
at com.bea.wlw.netui.pageflow.AutoRegisterActionServlet.process(AutoRegisterActionServlet.java:527)
at com.bea.wlw.netui.pageflow.PageFlowActionServlet.process(PageFlowActionServlet.java:152)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)

Hi
Are you getting into this issue under load or concurrent requests or a simple call itself fails with the NullPointer?
I see that you are using 8.1Sp5 but I have seen cases where the application is not updated.
Can you please try the following steps to update the library jars and try again?
1) Right click on the webproject -> choose Install -> Update Project libraries
2) Just hit install without modifying anything.
3) Once done hit close.
4) Now clean the app and rebuild and test again.
Let me know how it goes.
Thanks
Vimala

Oracle Web Publisher: NullPointerException when starting Java Applet

Hi there,
I'm using Express Server 6.3.4 and Web Publisher 6.3.2 and have created a very simple web briefing -- just a basic web page to see whether it works.
Now when browsing the sample page, an applet is loaded and tells me that several Oracle java classes are loaded. But in the end it fails:
java.lang.NullPointerException at oracle.olap.webAgent.express.Express.execute(Unknown Source) at ....
Does anybody know any solution?
Stefan

Yes, I tried a sample "application" -- the same error. I'm using IE5.5. To locate the "bug", I did the following:
I saved the generated HTML code (including the applet tag and all parameters) and loaded that "static" page using SUN's appletviewer. After a short error message (something like "Error in xwd_init: you provided extra input '\'") the applet was loaded and displayed properly. So I know that there's neither a classpath problem nor classes are missing.
Thank you for your help.
Stefan

NullPointerException in ConnectionMOWrapper.java:42

We are running WLS 5.1 sp8 clustered with oci driver 815. We occasionally run into
getConnection problem, see following. I would appreciate if any engineer familiar
with that piece of code will help me pinpoint the problem.
for the Exception below,
2002/01/10 12:42:00.234 getConnection(DBManager.java:131) ERROR: Can't connect
to database URL jdbc:weblogic:jts:oraclePool
===> exception message: java.lang.NullPointerException:
Start server side stack trace:
java.lang.NullPointerException
at weblogic.jdbc.common.internal.ConnectionMOWrapper.<init>(ConnectionMOWrapper.java:42)
at weblogic.jdbc.common.internal.ConnectionEnv.setConnection(ConnectionEnv.java:142)
at weblogic.jdbc.common.internal.DriverProxy.execute(DriverProxy.java:173)
at weblogic.t3.srvr.ClientRequest.execute(ClientContext.java:1032)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:129)
End server side stack trace
Our code is like this:
 try {
 Connection c = d.connect(uRL, null);
 return c; // return the connection, even if it is null
 catch (Exception e) {
 String errorMessage = "ERROR: Can't connect to database URL " + uRL;
 LogEvent.log(e, errorMessage); // log the stack trace with errorMessage
string, see above.
 throw (SQLException) e;
(being a developer myself, it usually is the easiest thing to fix and/or pinpoint
for null pointer exception with stack trace)

Hi. I believe this is a known bug that was fixed in 5.1 a long while back. You should
upgrade to the latest sp.
Joe
Gary Zhu wrote:
>
We are running WLS 5.1 sp8 clustered with oci driver 815. We occasionally run into
getConnection problem, see following. I would appreciate if any engineer familiar
with that piece of code will help me pinpoint the problem.
for the Exception below,
2002/01/10 12:42:00.234 getConnection(DBManager.java:131) ERROR: Can't connect
to database URL jdbc:weblogic:jts:oraclePool
===> exception message: java.lang.NullPointerException:
Start server side stack trace:
java.lang.NullPointerException
at weblogic.jdbc.common.internal.ConnectionMOWrapper.<init>(ConnectionMOWrapper.java:42)
at weblogic.jdbc.common.internal.ConnectionEnv.setConnection(ConnectionEnv.java:142)
at weblogic.jdbc.common.internal.DriverProxy.execute(DriverProxy.java:173)
at weblogic.t3.srvr.ClientRequest.execute(ClientContext.java:1032)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:129)
End server side stack trace
Our code is like this:
try {
Connection c = d.connect(uRL, null);
return c; // return the connection, even if it is null
catch (Exception e) {
String errorMessage = "ERROR: Can't connect to database URL " + uRL;
LogEvent.log(e, errorMessage); // log the stack trace with errorMessage
string, see above.
throw (SQLException) e;
(being a developer myself, it usually is the easiest thing to fix and/or pinpoint
for null pointer exception with stack trace)--
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MANAGER, E-SALES Plano, TX

How to use Apache's FOP (getting NPE)

I'm trying to call out to FOP from a servlet to generate a PDF. Here's my code:
Driver driver = new Driver();
try {
driver.setOutputStream(response.getOutputStream());
} catch (IOException e) {
e.printStackTrace();
driver.setRenderer(Driver.RENDER_PDF);
Transformer transformer;
try {
transformer=TransformerFactory.newInstance().newTransformer(new StreamSource (xslStream));
transformer.transform(new StreamSource(xmlStream), new SAXResult(driver.getContentHandler()));
} catch (TransformerConfigurationException e) {
e.printStackTrace();
} catch (TransformerFactoryConfigurationError e) {
e.printStackTrace();
} catch (TransformerException e) {
e.printStackTrace();
The call to transform(...) causes a NullPointerException as such:
java.lang.NullPointerException
at oracle.xml.jaxp.JXTransformer.reportXSLException(JXTransformer.java:762)
at oracle.xml.jaxp.JXTransformer.transform(JXTransformer.java:335)
Any ideas what the problem might be?
Thanks,
--Voytek Jarnot

I fixed my problems with the following code, seems like oracle's xsl code is broke (at least in this context). Setting the javax.xml.transform.TransformerFactory to either "org.apache.xalan.processor.TransformerFactoryImpl" or "org.apache.xalan.xsltc.trax.TransformerFactoryImpl" works. I'm using the xsltc version for performance reasons.
Of course, the whole point of the api is to allow vendors to plug in implementations, and for me not to worry about which specific implementing classes are being used. I'm breaking that abstraction here, but at least it works...
<pre>
static {
//Set the TransformerFactory system property to generate and use translets.
//The setting for the Xalan Transformer "org.apache.xalan.processor.TransformerFactoryImpl"
String key = "javax.xml.transform.TransformerFactory";
String value = "org.apache.xalan.xsltc.trax.TransformerFactoryImpl";
Properties props = System.getProperties();
props.put(key, value);
System.setProperties(props);
</pre>

Client_text_io.fopen causes java.lang.NullPointerException

Hi all
I have the following very simple snippet of code:
declare
 f client_text_io.file_type;
begin
 f := client_text_io.fopen('C:\test.txt', 'r');
end;
If "C:\Test.txt" does NOT exist on the client, Webutil correctly pops up and complains "Can't open file" etc. But... when the file actually exists and is ready to be opened for read, the following exception is thrown in the console, and nothing happens:
java.lang.NullPointerException: charsetName
 at java.io.InputStreamReader.<init>(Unknown Source)
 at oracle.forms.webutil.file.FileFunctions.fopen(Unknown Source)
 at oracle.forms.webutil.file.FileFunctions.getProperty(Unknown Source)
 at oracle.forms.handler.UICommon.onGet(Unknown Source)
 at oracle.forms.engine.Runform.onGetHandler(Unknown Source)
 at oracle.forms.engine.Runform.processMessage(Unknown Source)
 at oracle.forms.engine.Runform.processSet(Unknown Source)
 at oracle.forms.engine.Runform.onMessageReal(Unknown Source)
 at oracle.forms.engine.Runform.onMessage(Unknown Source)
 at oracle.forms.engine.Runform.processEventEnd(Unknown Source)
 at oracle.ewt.lwAWT.LWComponent.redispatchEvent(Unknown Source)
 at oracle.ewt.lwAWT.LWComponent.processEvent(Unknown Source)
 at java.awt.Component.dispatchEventImpl(Unknown Source)
 at java.awt.Container.dispatchEventImpl(Unknown Source)
 at java.awt.Component.dispatchEvent(Unknown Source)
 at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
 at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
 at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
 at java.awt.Container.dispatchEventImpl(Unknown Source)
 at java.awt.Window.dispatchEventImpl(Unknown Source)
 at java.awt.Component.dispatchEvent(Unknown Source)
 at java.awt.EventQueue.dispatchEvent(Unknown Source)
 at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
 at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
 at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
 at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
 at java.awt.EventDispatchThread.run(Unknown Source)
2006-feb-23 10:36:18.653 ERROR>WUC-15 [FileFunctions.fopen()] Uventet fejl, undtagelse: java.lang.NullPointerException: charsetName
I have no idea, what goes wrong here.... can anyone help? I use Sun JPI 1.5 on the client.
Thanks in advance.

Hi all
I have forms 9.0.4.6 and Webutil 1.0.6
When I use client_text_io.fopen like this:
declare
f client_text_io.file_type;
begin
f := client_text_io.fopen('C:\test.txt', 'r');
end;
I get an error:
ERROR>WUC-15 [FileFunctions.fopen()] Unexpected error, Exception: java.lang.NullPointerException
java.lang.NullPointerException
 at sun.io.Converters.getConverterClass(Unknown Source)
 at sun.io.Converters.newConverter(Unknown Source)
 at sun.io.ByteToCharConverter.getConverter(Unknown Source)
 at java.io.InputStreamReader.<init>(Unknown Source)
 at oracle.forms.webutil.file.FileFunctions.fopen(FileFunctions.java:413)
 at oracle.forms.webutil.file.FileFunctions.getProperty(FileFunctions.java:188)
 at oracle.forms.handler.UICommon.onGet(Unknown Source)
 at oracle.forms.engine.Runform.onGetHandler(Unknown Source)
 at oracle.forms.engine.Runform.processMessage(Unknown Source)
 at oracle.forms.engine.Runform.processSet(Unknown Source)
 at oracle.forms.engine.Runform.onMessageReal(Unknown Source)
 at oracle.forms.engine.Runform.onMessage(Unknown Source)
 at oracle.forms.engine.Runform.processEventEnd(Unknown Source)
 at oracle.ewt.lwAWT.LWComponent.redispatchEvent(Unknown Source)
 at oracle.ewt.lwAWT.LWComponent.processEvent(Unknown Source)
 at java.awt.Component.dispatchEventImpl(Unknown Source)
 at java.awt.Container.dispatchEventImpl(Unknown Source)
 at java.awt.Component.dispatchEvent(Unknown Source)
 at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
 at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
 at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
 at java.awt.Container.dispatchEventImpl(Unknown Source)
 at java.awt.Window.dispatchEventImpl(Unknown Source)
 at java.awt.Component.dispatchEvent(Unknown Source)
 at java.awt.EventQueue.dispatchEvent(Unknown Source)
 at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
 at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
 at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
 at java.awt.EventDispatchThread.run(Unknown Source)
Could anybody help me? I really need to use this.

ForceLogoffClientUser causes a NullPointerException in PageBuilder.java:893

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